Estimates of the current emissions of methane to the atmosphere are given in the table below....
Estimates of the current emissions of methane to the atmosphere are given in the table below.
Calculate the residence time of methane in the atmosphere given that its current concentration = 1.80 ppmv. The total number of moles of all gases in the atmosphere = 1.82 x 1020. HINT: Start by calculating the moles of CH4.
|
Source of atmospheric CH4 |
x 109 kg per year |
|
Wetlands and other natural sources |
160 |
| Fossil fuel-related | 100 |
| Anthropogenic of biological origin | 275 |
Homework Answers
Add Answer to:
Estimates of the current emissions of methane to the atmosphere
are given in the table below....
1 of 2 GEOL 3382/6334 Atmospheric Chemistry Problem Set #2 1. Methane (CH4) is emitted to...
1 of 2 GEOL 3382/6334 Atmospheric Chemistry Problem Set #2 1. Methane (CH4) is emitted to the atmosphere through natural and anthropogenic processes. The following table shows the most current understanding of the sources and sinks of CH4 a. Calculate the atmospheric burden of CHs in Tg (1 Tg 10g) in the troposphere with a global average mixing ratio of 1.782 ppmv. Tropospheric air has an average density of 0.71 kg m3. The Standard Atmosphere Calculator (http://www.digitaldutch.com/atmoscalc/) may be of...
Methane ts for most global methane production. During a disproportionation reaction, a carbohydnos goba glucose) is...
Methane ts for most global methane production. During a disproportionation reaction, a carbohydnos goba glucose) is simultaneously oxidized and reduced to form carbon (CH). This process occurs in wetlands, rice paddies, domestic 11. The decay of organic material in anaerobic environments e.g-, dioxide and methane sewage, and landfills among other locations, (A similar process called entericfermentation a digestive tracts of termites and ruminants such as cattle. ntation occurs in the Nitrous Oxide 12. Denitrification occurs in soils and oceans when...
3. Using the given conversion factors, calculate the residence time of methane in an atmospheric condition...
3. Using the given conversion factors, calculate the residence time of methane in an atmospheric condition where the steady state influx concentration is 1.75 ppv and the total release of methane from all sources is 550 million tons per year [2000lbs- ton, 2.2 lbs-1 kg, average molecular weight of air molecules is 29 g/mol, total mass of the atmosphere = 5.27 x 10' kg ] {Hint: Residence time= [steady- state amount of substance in the reservoir][rate of inflow to (or...
1. Match the definitions at the left with the most appropriate term on the right. NOTE:...
1. Match the definitions at the left with the most appropriate term on the right. NOTE: A given term in the right-hand column may or may not be used more than once. _An example of a secondary air pollutant A. PM2.5 Estimated number of children worldwide under 5 years of age B. PM10 that are killed by air pollution each year Geographic region where about two-thirds of all air pollution C. Carbon monoxide (CO) related deaths occur D. Nitrogen dioxide...
Please summarise below in a concise way. Alternative energy is studied as a result of the increas...
Please summarise below in a concise way. Alternative energy is studied as a result of the increasing costs of energy, the harm that fossil fuel may be costing the planet and the fact the energy demand is going up and the supply of fossil fuels may be going down. Energy and economic growth have always been going up, the more energy we consume, the more wealth we create as seen in the GDP of developed nations such as the USA,...
1. If, as of March 2017, we had about 407ppm of atmosphere CO2 and we continue...
1. If, as of March 2017, we had about 407ppm of atmosphere CO2
and we continue to increase the amount of CO2 at the rate of about
2ppm. How many years will it take to reach 450ppm?
Climate Change Activity Climate Change and the Spread of Disease Vectors Is there global warming? Bellevue College meteorologist Kent Short provides a "Global Warming Up-date" every January. The current up-date (for 2017) stresses the trends during the 21st century where the 117 years...
2. From March 2017 to March 2019 the atmosphere CO2 went from about 407ppm to 415.5ppm....
2.
From March 2017 to March 2019 the atmosphere CO2 went from about
407ppm to 415.5ppm. What is the average increase in CO2 for those
two years?
3.
Based on question 2, how many years before we reach 450ppm?
Climate Change Activity Climate Change and the Spread of Disease Vectors Is there global warming? Bellevue College meteorologist Kent Short provides a "Global Warming Up-date" every January. The current up-date (for 2017) stresses the trends during the 21st century where the...
QUESTION 3 The textbook discusses 3 types of environmental degradation affecting the environment. Below, please match...
QUESTION 3 The textbook discusses 3 types of environmental degradation affecting the environment. Below, please match each type of degradation discussed to the type of consequence suggested in the textbook. (Answer based on what the book says, not based on your personal opinion.) Air pollution A., is killinig humans 8,..isklin the earth Land poliution Water pollution address chiticar Watel Air Pollution Air pollution occurs when the release of materials to the atmosphere cannot be safelv disposed of by natural processes....
1 of 2 GEOL 3382/6334 Atmospheric Chemistry Problem Set #2 1. Methane (CH4) is emitted to the atmosphere through natural and anthropogenic processes. The following table shows the most current understanding of the sources and sinks of CH4 a. Calculate the atmospheric burden of CHs in Tg (1 Tg 10g) in the troposphere with a global average mixing ratio of 1.782 ppmv. Tropospheric air has an average density of 0.71 kg m3. The Standard Atmosphere Calculator (http://www.digitaldutch.com/atmoscalc/) may be of...
Methane ts for most global methane production. During a disproportionation reaction, a carbohydnos goba glucose) is simultaneously oxidized and reduced to form carbon (CH). This process occurs in wetlands, rice paddies, domestic 11. The decay of organic material in anaerobic environments e.g-, dioxide and methane sewage, and landfills among other locations, (A similar process called entericfermentation a digestive tracts of termites and ruminants such as cattle. ntation occurs in the Nitrous Oxide 12. Denitrification occurs in soils and oceans when...
3. Using the given conversion factors, calculate the residence time of methane in an atmospheric condition where the steady state influx concentration is 1.75 ppv and the total release of methane from all sources is 550 million tons per year [2000lbs- ton, 2.2 lbs-1 kg, average molecular weight of air molecules is 29 g/mol, total mass of the atmosphere = 5.27 x 10' kg ] {Hint: Residence time= [steady- state amount of substance in the reservoir][rate of inflow to (or...
1. Match the definitions at the left with the most appropriate term on the right. NOTE: A given term in the right-hand column may or may not be used more than once. _An example of a secondary air pollutant A. PM2.5 Estimated number of children worldwide under 5 years of age B. PM10 that are killed by air pollution each year Geographic region where about two-thirds of all air pollution C. Carbon monoxide (CO) related deaths occur D. Nitrogen dioxide...
1. If, as of March 2017, we had about 407ppm of atmosphere CO2
and we continue to increase the amount of CO2 at the rate of about
2ppm. How many years will it take to reach 450ppm?
Climate Change Activity Climate Change and the Spread of Disease Vectors Is there global warming? Bellevue College meteorologist Kent Short provides a "Global Warming Up-date" every January. The current up-date (for 2017) stresses the trends during the 21st century where the 117 years...
2.
From March 2017 to March 2019 the atmosphere CO2 went from about
407ppm to 415.5ppm. What is the average increase in CO2 for those
two years?
3.
Based on question 2, how many years before we reach 450ppm?
Climate Change Activity Climate Change and the Spread of Disease Vectors Is there global warming? Bellevue College meteorologist Kent Short provides a "Global Warming Up-date" every January. The current up-date (for 2017) stresses the trends during the 21st century where the...
QUESTION 3 The textbook discusses 3 types of environmental degradation affecting the environment. Below, please match each type of degradation discussed to the type of consequence suggested in the textbook. (Answer based on what the book says, not based on your personal opinion.) Air pollution A., is killinig humans 8,..isklin the earth Land poliution Water pollution address chiticar Watel Air Pollution Air pollution occurs when the release of materials to the atmosphere cannot be safelv disposed of by natural processes....
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